Agriculture, Law and Environmental Protection
From Pesticide Control to Ecocide: Mauritius’ Changing Approach to Agricultural Chemicals
How Mauritius can protect agricultural productivity while responding more effectively to chemical risks, food-safety concerns and long-term environmental damage.
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| Responsible pesticide management requires appropriate protective equipment, careful application and effective farmer training. |
Agricultural chemicals have played an important role in maintaining crop productivity and protecting farmers’ livelihoods in Mauritius. Yet their benefits must be weighed against their potential effects on human health, soil quality, biodiversity and water resources.
This challenge is particularly significant for a Small Island Developing State. Mauritius has limited land and freshwater resources, while farming, housing, industry and tourism operate within a closely connected environment. Chemicals applied in one place may therefore have consequences extending far beyond the farm on which they were used.
Mauritian law is beginning to reflect this wider understanding of environmental responsibility. Alongside legislation governing dangerous chemicals, pesticide use and food safety, the country has now introduced the criminal offence of ecocide for exceptionally serious environmental harm.
The central question
How can Mauritius continue to support productive farming while preventing chemical use from creating lasting environmental and public-health costs?
A regulatory system built around three areas of protection
The regulation of agricultural chemicals in Mauritius is distributed across several laws and public authorities. Three statutes are especially important.
| Legislation | Main focus | Key responsibilities |
|---|---|---|
| Dangerous Chemicals Control Act | Importation, manufacture, distribution, storage and handling of dangerous chemicals, including pesticides | Licensing, import permits, classification, packaging, labelling and safety information |
| Use of Pesticides Act 2018 | Use of pesticides in agricultural production | Authorised pesticide use, application requirements and control of residues in agricultural produce |
| Food Act and Food Regulations | Safety and quality of food placed on the market | Limits for pesticide residues and protection of consumers from contaminated food |
The Dangerous Chemicals Control Act requires licences for activities such as importing, manufacturing, selling, storing and distributing dangerous chemicals. Separate permits are required for importing or exporting pesticides and chemicals classified as extremely dangerous.
The Act also establishes requirements relating to packaging, safety data sheets and the communication of chemical hazards. Enforcement responsibilities are shared among several agencies, including the ministries responsible for health, agriculture and the environment.
The Use of Pesticides Act focuses more specifically on agricultural practice. It seeks to ensure that pesticides are used only under authorised conditions and that residues in harvested produce remain within permitted Maximum Residue Levels, commonly known as MRLs.
Food legislation completes the chain by regulating the safety of products reaching consumers. Mauritius’ Food Regulations provide that pesticide residues must not exceed the applicable limits established through the Codex Alimentarius pesticide-residue database.
Together, these laws are intended to regulate the entire pathway—from chemical importation and agricultural application to the sale and consumption of food.
Where the system remains vulnerable
The existence of legislation does not automatically guarantee effective protection. Several weaknesses deserve closer attention.
One concern is whether the schedules and authorised-substance lists attached to older chemical legislation are being updated rapidly enough to reflect current scientific evidence and international regulatory decisions.
If chemicals remain authorised locally after stricter jurisdictions have prohibited or discouraged their use, farmers, consumers and ecosystems may be exposed to risks that newer alternatives could reduce.
The Dangerous Chemicals Control Act also permits written authorisation for the importation, manufacture, possession or use of a prohibited chemical, following a favourable recommendation from the Dangerous Chemicals Advisory Council.
Such flexibility may occasionally be necessary—for example, where no technically viable substitute exists—but it should be supported by clearly defined criteria, documented risk assessments and transparent reporting. Without these safeguards, exceptional authorisations risk weakening the credibility of the general prohibition.
Another challenge is fragmented responsibility. Different authorities oversee chemical importation, agricultural use, workplace safety, environmental contamination and food residues. Effective regulation therefore depends on timely information-sharing and coordinated enforcement across institutions.
Why pesticide residues are described as “silent killers”
Acute pesticide poisoning may produce immediate and recognisable symptoms. Chronic exposure is more difficult to identify because residues may be colourless, odourless and impossible for consumers to detect.
The greatest concern is not necessarily a single meal or isolated exposure. It is the possibility of repeated exposure to mixtures of residues over many years. Depending on the substance, dose and duration, such exposure may be associated with neurological, reproductive, endocrine or carcinogenic effects.
Why Carbendazim attracts concern
Carbendazim illustrates the importance of reviewing pesticide approvals as scientific knowledge develops. The substance has attracted international concern because of its potential mutagenic, reproductive and developmental effects. Its presence in food or the environment is therefore not simply a technical compliance issue; it raises broader questions about preventive public-health policy.
The issue also extends beyond food residues. Large quantities of herbicides and other agricultural chemicals are used in crop production, including within the sugar-cane sector. If storage, application or disposal practices are poorly controlled, these substances may enter soils, rivers and groundwater.
For Mauritius, groundwater contamination is especially serious. Once persistent chemicals reach an aquifer, removing them may be technically difficult, expensive or, in some cases, impossible within a meaningful timeframe.
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| Agricultural chemical management must protect not only crops, but also soil health, biodiversity and Mauritius’ groundwater resources. |
The traceability gap
A modern pesticide-control system should be able to answer several basic questions:
- Which chemical was imported?
- Who purchased it?
- On which crop and field was it applied?
- What quantity was used?
- When was the crop harvested?
- How were unused products and empty containers managed?
- Did residue testing confirm compliance before the produce entered the market?
Available information does not always create a complete path from importation to final use. Mauritius would benefit from a national digital traceability system linking chemical imports, licensed sellers, trained applicators, farm acreage, crops and application volumes.
Such a system could automatically identify unusual patterns. If the amount of a pesticide purchased or applied appears excessive in relation to the cultivated area, the case could be flagged for inspection before contamination occurs.
This would represent an important transition from reactive enforcement to risk-based prevention.
Sampling must be proportionate to the food system
Residue testing is an essential part of consumer protection, but its value depends on the number of samples, where they are collected and how intelligently they are selected.
The Pesticides Regulatory Office publishes results for samples collected from farms, auction markets, supermarkets, retailers and imported consignments. These reports provide valuable information, but a relatively small testing programme cannot, by itself, provide complete assurance across the national food supply.
Testing should increasingly be targeted according to risk. Priority could be given to:
- Crops with a history of non-compliance
- Produce commonly eaten raw
- Food consumed frequently by children
- Farms or importers associated with previous violations
- Chemicals presenting particularly serious health hazards
- Commodities for which pesticide use is unusually intensive
Published results should also distinguish clearly between residues that exceed a numerical MRL and substances that are not authorised or recommended for a particular crop.
Ecocide changes the legal frontier
Mauritius introduced the offence of ecocide through a 2026 amendment to the Environment Act 2024. The provision entered into force on 18 April 2026.
Section 135A defines ecocide as an unlawful or wanton act committed with knowledge that there is a substantial likelihood of causing damage that is severe and either widespread or long-term.
Severe
Very serious adverse changes, disruption or harm, including grave effects on human life or natural, cultural or economic resources.
Widespread
Damage affecting an entire ecosystem or species, or a large number of people.
Long-term
Damage that is irreversible or cannot be remedied through natural recovery within a reasonable period.
Wanton
Reckless disregard for damage that would be clearly excessive in relation to the anticipated social and economic benefits.
A conviction may lead to fines proportionate to the offender’s circumstances, the gravity and duration of the damage, and any financial benefit obtained. It may also result in penal servitude for up to ten years.
The court may impose additional measures, including environmental restoration, compensation, recovery of clean-up costs, withdrawal of permits and exclusion from public funding.
What could this mean for agriculture?
Ecocide should not be interpreted as criminalising ordinary farming or every case of pesticide misuse. It is reserved for conduct meeting a demanding legal threshold. However, in an extreme scenario, liability could potentially arise where a person knowingly and unlawfully releases a highly hazardous chemical on a scale likely to cause severe and widespread ecosystem contamination or severe, long-term damage to groundwater.
Whether a particular incident constitutes ecocide would depend on the evidence and the courts’ interpretation of the statutory criteria. Nevertheless, the new offence sends a clear policy signal: environmental damage should not be treated simply as a manageable cost of doing business.
Agroecology as an economic and compliance strategy
Stronger regulation should not be presented as a choice between environmental protection and agricultural productivity. Reducing chemical dependence can also lower production costs, improve soil health and strengthen farm resilience.
Integrated pest management and agroecological practices may include:
- Crop rotation and diversification
- Resistant crop varieties
- Biological pest control
- Field monitoring before treatment
- Targeted rather than calendar-based spraying
- Mechanical or cultural weed management
- Soil-health improvement
- Greater use of validated biopesticides
The 2026 Assises de l’Agriculture report recommends accredited training, licensing, monitoring of pesticide sales and applications, support for locally developed biopesticides, stronger laboratory capacity and buffer zones around rivers and reservoirs.
It also proposes progressive certification categories to help farms move towards lower-input production systems. This transition must be practical. Farmers need access to training, extension support, effective alternatives and incentives—not simply additional obligations.
A role for universities
Universities can help bridge the gap between legislation, scientific evidence and farming practice. Their contribution could include:
- Maintaining an independent database of pesticide risks and regulatory changes
- Monitoring residues in food, soil and water
- Evaluating exposure to combinations of chemicals
- Testing locally appropriate alternatives
- Developing digital traceability and early-warning systems
- Providing accredited training for pesticide users
- Supporting policymakers with independent impact assessments
Universities can also help ensure that public debate remains evidence-based. Terms such as “toxic,” “dangerous” and “ecocide” must be used precisely. Overstatement can cause unnecessary fear, while understatement can conceal genuine risks.
From law on the books to protection in practice
Mauritius now has an opportunity to build a more coherent agricultural chemical-management system. The introduction of ecocide establishes a powerful response to the most serious environmental destruction, but criminal law acts mainly at the far end of the regulatory spectrum.
Everyday protection will still depend on updated chemical lists, trained pesticide users, reliable residue testing, transparent exceptional authorisations, safe container disposal and complete traceability from importer to field.
For Mauritian agriculture, this is more than a compliance exercise. It is an investment in safe food, healthy soils, protected water resources and the long-term resilience of the sector.
Further reading
This article provides a general educational overview and does not constitute legal advice.
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